I have been using fish oil caps for a long time now. I tried this one on a reccomdation of Iherb, found that this is the worst one for burping up fish oil and tast. and cannot get taste out for some time. went back to the Krill fish oil tabs that do not do this nearly as bad or at all. waste of money use the Krill fish oil. unless you like fish oil taste.

The capsules seem to consider rancid fish oil. I got fishy burps and cut one open in order to make sure the gelcaps were okay, they were not.
I contacted Natural Factors to see if they were willing to take it back or answer my questions, they only referred back to iherb. iherb itself refused to respond to the issue that this product was rancid.
I take a different fish oil in liquid form, 1 tsp twice per day with no problems.

It is one of the few fish oil products that are pharmaceutical grade (top quality). I use this brand now that I am pregnant. I find that fish oil helps me a lot with my mood, my menstrual cycle and also (most importantly) with my skin and hair! I believe it's kind of a magic pill!
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For brain peak performance, sharp memory, cardiovascular health, etc. I think everybody should take good quality fish oil or similar products unless you have access to clean uncontaminated deep ocean oily fish that is low in mercury and other pollutants. Never eat farmed fish which are fed with antibiotics,growth hormones and synthetic "nutrients". After I finish Natural Factors I may try a different brand. In addition to fish oil, I am also taking spirulina, nattokinase and CocoCardio and I have written reviews for these products as well. You are welcome to check them out on my product review page (good-day).